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C#判斷字符串中是否含有漢字

string strTmp = "se 5 王%# @e";

使用正則表達(dá)式

Regex r = new Regex(@"[\u4e00-\u9fa5]+");

            Match mc = r.Match(strTmp);

            if(mc.Length!=0)

            {

                Console.WriteLine("strTmp含有漢字..");

            }

一般方法

int n1=0,n2=0,n3=0,n4=0,n5=0;

            foreach (char ch in strTmp)

            {

                if (ch >= '0' && ch <= '9')

                    n1++;//n1對(duì)數(shù)字進(jìn)行計(jì)數(shù)

                else if (ch >= 'a' && ch <= 'z' || ch >= 'A' && ch <= 'Z')

                    n2++;//n2對(duì)字母進(jìn)行計(jì)數(shù)

                else if (ch == ' ')

                    n3++;//n3對(duì)空格進(jìn)行計(jì)數(shù)

                else if (ch >= 0x4e00 && ch <= 0x9fa5)

                {

                    n4++;//n4對(duì)漢字進(jìn)行計(jì)數(shù)

                }

                else

                {

                    n5++;//n5對(duì)特殊字符進(jìn)行計(jì)數(shù)

                }

            }

判斷是否含有空格

int pos=strTmp.IndexOf(' ');

            if (pos == -1)

            {

                Console.WriteLine("不含有空格");

            }

            else

            {

                Console.WriteLine("含空格");

            }

判斷一個(gè)字符是否為漢字

string strTmp = "利";

            byte[] tmp = System.Text.Encoding.Default.GetBytes(strTmp);

            if (tmp.Length > 1)

            {

                Console.WriteLine("該字符為漢字..");

            }